cold-blooded vertebrate Flashcards
(22 cards)
Vertebrates
an animal that has a backbone
Endotherm
an animal that can use body heat from chemical reactions in the body’s cells to maintain a constant body temperature
Ectotherm
an organism that needs sources of heat outside of itself
Lateral Line
a faint line visible on both sides of a fish’s body that runs the length of the body and marks the location of sense organs that detect vibrations in water
Gill
a respiritory organ in which oxygen from the water in exchanged with carbon dioxide from the blood
Jawless fishes
a superclass of jawless fish in the phylum Chordata, subphylum Vertebrata, consisting of both present and extinct species
Cartilaginous fishes
a class that contains the cartilaginous fishes that have skeletons primarily composed of cartilage
Bony fishes
a diverse taxonomic group of fish that have skeletons primarily composed of bone tissue
Swim bladder
a gas filled sac that is used to control buoyancy; also known as a gas bladder
Lung
a respiritory organ in which oxygen from the air is exchanged with carbon dioxide from the blood
Tadpole
the aquatic fish shaped larva of a frog or a toad
Metamorphosis
a phase in the life cycle of many animals during which a rapid change from the immature form of an organism to the adult form takes place
Caecilians
a group of limbless, vermiform or serpentine amphibians
Salamanders
a lizard-like amphibian with an elongated body and tail and short limbs
Frogs
a tailless amphibian with a short squat body, moist smooth skin, and very long hind legs for leaping
Toads
a tailless amphibian with a short stout body and short legs, typically having dry warty skin that can exude poison
Amniotic egg
a type of an egg that is surrounded by a membrane, the amnion, and that in reptiles, birds, and egg-laying mammals contains a large amount of yolk and is surrounded by a shell
Turtles
a slow-moving reptile, enclosed in a scaly or leathery domed shell into which it can retract its head and thick legs
Tortoises
a turtle, typically a herbivorous one that lives on land
Crocodiles
a large predatory semiaquatic reptile with long jaws, long tail, short legs, and a horny textured skin, using submersion and stealth to approach prey unseen. The crocodile has been extensively hunted for its valuable skin
Alligators
a large semiaquatic reptile similar to a crocodile but with a broader and shorter head, native to the Americas and China
Snakes
a long limbless reptile which has no eyelids, a short tail, and jaws that are capable of considerable extension. Some snakes have a venomous bite
